(Build this at your own risk. There's lots of money to be wasted with bad woodworking skills, and lots of fingers to loose with misuse of the equipment.)

I was hoping to buy a Mesa Boogie Thiele guitar cabinet, but the price blew me away! So after weeks of searching, I found plans for a very similar cab.

The Mesa Thiele and the EV (ElectroVoice) TL806 are almost exactly the same. Many people on forums that i browsed through believe Mesa copied EV's plans for the Thiele. (They are open sourced, so it doesn't matter anyway)

The only major difference is that Mesa switched a few dimensions on their cab so it would have a flush fit under the Mark III amp head. But they maintained the internal volume of 1.3 ft, which is the most critical part.

I will be building mine with an extension on each side so it fits under my Peavey 5150, but i will not be changing any dimensions! Just adding two extra "enclosures". They were my idea, but feel free to use them, or discard them. *If you use them, be sure you make them the width of your amp head!!!* (the 5150 is relatively small compared to marshalls)

Enough words! get started! (after you read the whole thing of course.....)

Step 1: Materials/Hardware

1. Good metal yard stick/large T-square (for precise right angles (make sure the T is still a right angle.... mine wasn't anymore, so i bought a new, bigger one!))
2. Very precise saw (table saw would be best)
3. Router (better!) or Jig saw+drill (what im using because im poor...)
4. Soldiering iron (very basic, easy soldiering... I suck at it...)
5. Drill+various sized bits including 1 inch for the TRS jack... (i will need to find one somewhere...)
6. various screws, (wood, 1.25" and 3.25") nuts and washers.
7. Wood glue.


1. 3/4 inch, 4'x8' sheet of Birch plywood (SUPER HEAVY! bring a friend. (if birch isn't available, MDF works too, but you will regret the choice! You need the dense wood to resonate, and make it all sound good!)) ~$51.55 at my Home Depot... Im sure there's cheaper...

2. 14+ feet of 0.75"x2.5" Fir (for bracing) (But 17+ for WIDENED cabinets!) ~$1.01 for 5 feet in HD's scrap bin.

3. 13 inches of 3/4"x3.5" Fir (part of the port...) ~$1.01 for 5 feet in HD's scrap bin.

$56.60 total on wood. (for me... (different stores probly have cheaper lumber prices.)

(I bought all of mine from www.parts-express.com (except the speaker, they don't carry it... ): )

1. A 1/4" TRS jack. (I used a "Neutrik NJ3FP6C 1/4" Locking Chassis Jack Nickel") ~ $6.54

2. Corners! (I bought "Dayton MC130-16 Metal 2-Leg Cabinet Corner") (16 in a pack) ~ $6.96

3. A handle! (me: "Penn-Elcom H1014K Extra Wide Strap Handle Black End Caps") ~ $3.38

4. Wire ("18 AWG Red/Black Zip Cord 1 ft." you have to get at least 10 ft.) ~ $3.10 for 10ft

5. Feet ("Penn-Elcom F1687 Rubber Cabinet Foot 1-1/2" Dia. x 3/8" H" ORDER 4!) ~ $3.76 for 4

6. Speaker mounting kit ("Cast Frame #10-32 Speaker Mounting Kit") ~ $3.39

7. Gasketing Tape (optional, but useful for airtight seals "Speaker Gasketing Tape 1/8" x 3/8" x 50 ft. Roll") ~ $6.19 a roll

Total: $42.57 after shipping on hardware (excluding speaker)

You have two choices that will work nicely. Any other speaker may risk putting the cabinet out of tune, and making dips or spikes in the cab's frequency response.

You only need one.. This cab is a 1x12, but it sounds huge! because of the ported front.
Them EV speaker is rated 200 watts, and the Eminence is rated 400 watts! so don't worry about blowing them!

1. ElectroVoice's EVM12L 12 inch loudspeaker. the cab was originally designed for this speaker, it is said to sound the best, but it is also very pricey! (lowest price i found: http://underbid.com/action/display/item/11957-1064270764/sku/ELEEVM12C8.html) ~212.12 (after shipping. www.grabcart.com (not on partsexpress... FIX THAT!!! I build these for local people!!!))

2. The other option is the Eminence Delta Pro-12A

for now:

I almost forgot!

there are also some other good EV plans here:
There's easier ways to make cabs. that seems like a lot of work
Great instructable nevertheless! :)<br><br>I'm going to try and make one too. <br>I already have made a 10' cab, which is slightly slanted. <br>It is also ported in the back and loaded with a Celestion UK g10s50, from a Rivera amp :P
Any good hardware store, like home-depot has these grill's for sale.<br>Usually a tad bit bigger then what you need. I personally like it on my small VOX VT30 amp. <br><br>Though I wish they had painted it flat-black like: http://www.rockpalace.com/gfx_productcode/100415/Vox-AD30VTXL-Valvetronic-XL.jpg <br><br>You might want to try that, its durable and acoustically perfect. Just don't get it to resonate ;) because that sucks obviously.
A speaker cable has two iron cores, where a signal / instrument cable has one core and shielding woven around that core. <br><br>Using a speaker cable as guitar cable will result in hum, using a guitar cable as speaker cable will result in a blown fuse if you're lucky or worse a blown tranny of it could even melt and potentially cause a fire.<br><br>Best is just to stick with using cables for what they are designed to do.
I bet this would be featured--if you included a photo of the finished cab (tolexed, and with a grill...) Great job, BTW.
I didnt do that to this one yet... I still need to order the grill cloth, and will most likely use truck bed liner for the covering. (Paints right on) thanks. Edit: I added as much as I could.
Thankx for the comment, I would be honored If you were to LINK to my Instructable! p.s. You and Your Uncle did a Great job on those cabinets, they look Very professional!!! Frederick @ampRiser.com Instructables.com/ampRiser Youtube.com/ampRiser myspace.com/ampRiser

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